(defun make-cd (title artist rating ripped)
(list :title title :artist artist :rating rating :ripped ripped))

(defvar *db* nil)
(defun add-record (cd) (push cd *db*))

(defun dump-db ()
  (dolist (cd *db*)
    (format t "~{~a: ~10t~a~%~}~%" cd)))

(add-record (make-cd "light moon" "yanni" 7 t))
(add-record (make-cd "your smile" "yanni" 8 t))
(add-record (make-cd "1492" "vangelis" 9 t))
(add-record (make-cd "antarctica" "vangelis" 10 t))
(add-record (make-cd "chung kuo" "vangelis" 11 t))
(add-record (make-cd "moon" "jyf" 10 t))
(add-record (make-cd "wtf" "jyf" 10 t))

(defun prompt-read (prompt)
  (format *query-io* "~a: " prompt)
  (force-output *query-io*)
  (read-line *query-io*))

(defun prompt-for-cd ()
  (make-cd 
    (prompt-read "Title")
    (prompt-read "Artist")
    (or (parse-integer (prompt-read "Rating") :junk-allowed t) 0)
    (y-or-n-p "Ripped [y/n]")
    ))

(defun add-cds ()
  (loop (add-record (prompt-for-cd))
        (if (not (y-or-n-p "Another? [y/n]: "))
            (return)
        )
  )
)

(defun save-db (filename)
  (with-open-file (out filename
                    :direction :output
                    :if-exists :supersede)
    (with-standard-io-syntax
      (print *db* out))))

(defun load-db (filename)
  (with-open-file (in filename)
    (with-standard-io-syntax 
      (setf *db* (read in)))))

(defun select-by-artist (artist)
  (remove-if-not #'(lambda (cd)
                     (equal (getf cd :artist) artist)) *db*))

(defun wtf ()
  (print "wtf"))
